On Feb 14, 2008, at 12:05 AM, davewolfs wrote:
Hello everyone,
I am hoping that some of you could provide me with some realistic
numbers on
the maximum number of Durable Topic subscribers.
I have never worked with Active MQ so I am not familiar with it's
limits.
In a production environment what are some realistic numbers for the
maximum
durable topic subscribers?
Is ActiveMQ capable of handling durable subscribers in the thousands
i.e.
5000 subscribers or is a number like this pushing the limits.
Please advise.
Thank you,
Dave
--
View this message in context:
http://www.nabble.com/Maximum-number-of-durable-topics-per-MQ-instance.-tp15471104s2354p15471104.html
Sent from the ActiveMQ - User mailing list archive at Nabble.com.
ActiveMQ certainly is capable of handling a large number of durable
subscribers - but I for one haven't tested the upper limit as yet.
Factors which you need to take into account are:
1. A thread is associated with connection - unless you use AIO or NIO
- so you need to ensure that your operating system allocate a large
number of file descriptors per process. If messages cannot be pushed
to the consumer straight away, they are pulled from data store - the
thread from the sending connection - or the thread used to acknowledge
messages from the consuming connection are used to do the polling.
2. Each durable subscriber adds a small overhead to the data store -
its worthwhile trying different implementations - JDBC or the default
file based store - to see which one is more suitable to your usage
patterns
Let us know how you get on!
cheers,
Rob
http://open.iona.com/ -Enterprise Open Integration
http://rajdavies.blogspot.com/
